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author | jeff <jeff@FreeBSD.org> | 2007-06-01 01:12:45 +0000 |
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committer | jeff <jeff@FreeBSD.org> | 2007-06-01 01:12:45 +0000 |
commit | a7a8bac81f171b93c4770f51c694b15c84a2f9f8 (patch) | |
tree | 9c09dcc76185c3dc30b048a5f2eb972f3bb8a849 /sys/kern/kern_sig.c | |
parent | 062ed7352f59fb6db93a3f51ca6e64ec0cefca22 (diff) | |
download | FreeBSD-src-a7a8bac81f171b93c4770f51c694b15c84a2f9f8.zip FreeBSD-src-a7a8bac81f171b93c4770f51c694b15c84a2f9f8.tar.gz |
- Move rusage from being per-process in struct pstats to per-thread in
td_ru. This removes the requirement for per-process synchronization in
statclock() and mi_switch(). This was previously supported by
sched_lock which is going away. All modifications to rusage are now
done in the context of the owning thread. reads proceed without locks.
- Aggregate exiting threads rusage in thread_exit() such that the exiting
thread's rusage is not lost.
- Provide a new routine, rufetch() to fetch an aggregate of all rusage
structures from all threads in a process. This routine must be used
in any place requiring a rusage from a process prior to it's exit. The
exited process's rusage is still available via p_ru.
- Aggregate tick statistics only on demand via rufetch() or when a thread
exits. Tick statistics are kept in the thread and protected by sched_lock
until it exits.
Initial patch by: attilio
Reviewed by: attilio, bde (some objections), arch (mostly silent)
Diffstat (limited to 'sys/kern/kern_sig.c')
-rw-r--r-- | sys/kern/kern_sig.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c index fe2bbbe..dc02346 100644 --- a/sys/kern/kern_sig.c +++ b/sys/kern/kern_sig.c @@ -1868,7 +1868,7 @@ trapsignal(struct thread *td, ksiginfo_t *ksi) mtx_lock(&ps->ps_mtx); if ((p->p_flag & P_TRACED) == 0 && SIGISMEMBER(ps->ps_sigcatch, sig) && !SIGISMEMBER(td->td_sigmask, sig)) { - p->p_stats->p_ru.ru_nsignals++; + td->td_ru.ru_nsignals++; #ifdef KTRACE if (KTRPOINT(curthread, KTR_PSIG)) ktrpsig(sig, ps->ps_sigact[_SIG_IDX(sig)], @@ -2781,7 +2781,7 @@ postsig(sig) SIGADDSET(ps->ps_sigignore, sig); ps->ps_sigact[_SIG_IDX(sig)] = SIG_DFL; } - p->p_stats->p_ru.ru_nsignals++; + td->td_ru.ru_nsignals++; if (p->p_sig != sig) { code = 0; } else { |